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Finding the Fourth Proportional to 245,268, 369,540.90 and 221,603.04

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Solution

The fourth proportional to 245,268, 369,540.90 and 221,603.04 is: 333,885.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,268 : 369,540.90 = 221,603.04 : x
  2. Step 2: Convert to fraction form
    245,268/369,540.90 = 221,603.04/x
  3. Step 3: Cross multiply
    245,268x = 369,540.90 × 221,603.04
  4. Step 4: Simplify right side
    245,268x = 81,891,386,844.34
  5. Step 5: Solve for x
    x = 81,891,386,844.34/245,268
  6. Step 6: Final answer
    x = 333,885.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.